1. School of Clinical Medicine Ningxia Medical University Yinchuan China
2. Department of Neurosurgery The First Affiliated Hospital of Xinxiang Medical University Wei Hui China
3. Department of Pharmacology Ningxia Medical University Yinchuan China
4. Laboratory Animal Centre Ningxia Medical University Yinchuan China
5. Ningxia Key Laboratory of Craniocerebral Diseases of Ningxia Hui Autonomous Region Ningxia Medical University Yinchuan China